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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Carbonation of Concrete with Fly Ash and Corrosion of Reinforcements in 20 Year Tests
Author(s): Masatane Kokubu and Shigeyoshi Nagataki
Publication: Special Publication
Appears on pages(s): 315-330
Keywords: carbonation; compressive strength; concretes; corrosion; corrosion resistance; corrosion tests; durability; fly ash; steels; reinforcing steels; tests; Materials Research
Abstract:Studies on the carbonation of concrete with fly ash and corrosion of reinforcements have been going on since 1962 at 16 research organizations in Japan. As already reported for intermediate ages, it has been shown that the depth of carbonation can be evaluated by compressive strength at the age of 28 days, which is very common value for specifying the concrete quality regardless of whether or not fly ash has been added. A number of findings have been made concerning the influence of exposure conditions on the depth of carbonation. This paper compiles the final test results at 20-year age, to augment the results previously reported for the intermediate ages. These studies also provide much verification data with respect to the durability of fly ash concrete. These test results are reflected on the Japanese standard specification for concrete cover.
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